逆向求解整周模糊度的姿态测量方法  

A method of attitude determination based on counter solved integer ambiguity

作　　者：李玉海[1] 夏娜[1,2] 唐媚[1] 钱浩伟[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009 [2]安全关键工业测控技术教育部工程研究中心,合肥230009

出　　处：《电子测量与仪器学报》2009年第7期35-40,共6页Journal of Electronic Measurement and Instrumentation

基　　金：国家教育部博士点基金新教师(编号:20070359029)资助项目;安徽省自然科学基金(编号:070412035)资助项目;国家大学生创新性实验计划(编号:081035908)资助项目

摘　　要：导航卫星载体姿态测量是航空、航天、航海和陆地导航中的关键问题。该文提出了一种逆向求解整周模糊度的载体姿态测量方法。基于相位双差观测方程构造适应度函数,采用进化算法搜索得到基线的初始姿态角,并由此求解出双差整周模糊度N,此后基于N实时计算基线姿态。该方法避开了直接搜索整周模糊度,可实现性好,同时又可以保证姿态解算的效率和稳定性。实验结果表明该方法不仅具有很高的测姿精度,而且在动态条件下具有良好的稳定性和动态性能。Attitude determination is a key problem in aviation, marine and land navigation. This paper presents a new method for cartier attitude measurement with navigation satellites. Design a fimess function based on double dif- ference phase observation equation, and search for the attitude angles of baseline using evolutionary algorithm. Then, counter calculate the double difference integer ambiguity N. Thereafter, calculate the baseline attitude angles in real-time based on N. This method can avoid searching the integer ambiguity directly, and guarantee the efficiency and stability of attitude determination. The experimental results show this method achieves high precision, good stability and dynamic characteristic, so it is applicable for dynamic attitude determination.

关 键 词：姿态测量 整周模糊度 进化算法 逆向求解 

分 类 号：V294.32[航空宇航科学技术] TP391[自动化与计算机技术—计算机应用技术]